Improvement in printing-presses



J. R. RANKIN.

PRINTING-PRESS.

No.177,002 I Patented May 2,.1876,

Fig.1.

N. PETERS, PHDTO-LITHDGHAPHER, WASHINGTONv D E PATENT.

JOHN R. RANKIN," OF INDIANAPOLIS, INDIANA.

IMPROV EME NT IN PRlNTlNG-PRESSES.

Specification forming part of Letters Patent 0. 177,002, dated May 2, 1876; application filed November 19, 1875.

To all whom it may concern: I

Be it known that I, JOHN R. RANKIN, of Indianapolis, county of Marion, State of Indiana, have invented certain Improvements in Hand Printing-Presses, of which the following is a description, reference being had to the accompanying drawings.

My inventionconsists in the construction and arrangement of the bed-frame and guidetracks, whereby a weighted rolling-cylinder, and its improved arrangements,are made to roll from one end of the machine to the other,

and make impressions of all matter set up on the raised bed below the cylinder; also, the arrangement of the gripers and mode of operating them in connection with the rollingcylinder and stops or studs on the bed, Whereby the paper is first clasped and held firm to the cylinder until an impression has been taken, and then to release and deposit the paper on racks at each end of the machine, the'whole designed as a hand printing-press for newspapers and job-work.

Figure 1 represents a side elevation of my improved hand printing-press. Fig. 2 is a plan view of the same, with the feed-tables removed to show more fully the arrangement of the parts below. Fig. 3 is an enlarged view of the cylinder, showing the arrangement of the gripers and their connections with the cylinder. Fig. 4 is a sectional view of the cylinder, taken through the line a b. Fig. 5 is an enlarged sectional view of the same, showing more fully the arrangement and connection of the gripers and cylinder.

A represents the bed or frame of the table mounted on legs E E E E. On each end of the frame A are arranged upright stand'ard 's L L L L, and on top of these standards are secured the feed-tables K K. On each pair of standards L L are also arranged racks or bars M M, designed to receive the printed paper after it has been carried by the roller N over the form F. On each side of the frame A are arranged the guide-tracks O and the cog-tracks B,on which the cylinder N rolls from one end of the machine to the other. The tracks B are provided with two cogs, one near each end, as at D D, which are designed to hold the cylinder N, by means of the notches J J in the flanges G G, in its proper position when at each end, so as to always present the gripers Q Q in the proper position to receive or release the paper at each end of the machine. Between the two frames A A is arranged a raised portion of the bed F, designed to hold the type or form F, as shown in Figs. 1 and 2. The cylinder N is made very heavy, and is provided with a flange, G G, at each end, which projects over the inside guide-track O, and rolls on the top of the outside track B. This arrangement allows the main cylinder N to roll on the track (J perfectly free from any interruption. Each flange G G of the cylinder is provided with two notches, J J, arranged to receive the cogs D D of the track B, and always present the gripers Q Q in their proper place. On the cylinder N are arranged two rods, P P, which are journaled to the adjustable plates R R R B. Each of these adjustable plates R are secured to the cylinder N at a suflicient distance from the flanges G G to allow the track 0 to work between them, and each plate R is provided with a slot in which is inserted the screws S S for securing the plates R, as desired, so as to allow the gripers Q Q, which are attached to the rods P, to be adjusted on the cylinder for different lengths of paper. On the rods P P are also arranged the gripers Q Q. An end View of the arrangement is shown in Figs. 4 and 5. These gripers Q are securely fastened to the rods P P, T, which are made of rubber, are looped over the gripers, and pass under the rods P P,

. and are secured to the studs or screws U in such a manner as to cause a pressure of the ends of the gripers Q on the cylinder N snfficient to hold the paper, which is clasped between the gripers and cylinder. On the rods P P are'also pivoted the levers V V, which are arranged so as to be hooked under the catches w w by hand, while the paper is being inserted between the gripers and cylinder, and are then released from the catches w w by hand, in order to allow the gripers Q to firmly clasp the paper and hold it in its position on the cylinder while an impression is being taken. When the cylinder N has been rolled over the form F, and approaches either end of the bed, then the levers V will come in contact alter- I nately with the studs 0 or O that project up Fierce.

and the springs T om the bed of the press at each end, and H18 depress the levers V, -which,by their conection with the rods P will cause the griprs Q Q to be elevated from the cylinder and alease the paper, which is then deposited on m rack M. While the cylinder is in this p0- ltion the gripers on the other side are lifted no held up in the same manner to receive nother sheet of paper from the other table, ind is operated the same on the return of the vlinder, and deposits the paper on the other ack M, thus making a double-acting hand irinting-press of great utility for newspapers .nd job-work.

The cylinder N is to be made of sufficient veight to make agood impression, and the yriper-bars P P should not be long enough to interfere with the track U; but to leave sufli- :ient room between their ends and the flanges 3r G to allow the cylinder to roll unobstructed )\'er the track.

I do not claim the cylinder rolling on a track, is that is old, and has been used in ordinary roof presses. i

What I claim as new, and wish to secure by [letters Patent,is--

1. In a proof-press, the combination, with 1116 cylinder N having the notched end flanges Sr G, of the guide-rails (J, and the slotted ournal-plates It R supporting the griperrods P P, said plates being located upon the cylinder in sucha manner as to secure its free revolution without the interference of the griper-rods, substantially as herein described.

2. The combination, with the adjustable journal-plates R R attached to the cylinder N substantially as described, and the griperrods P P, provided with the fingers Q Q and corresponding retaining-springs T T, of the lever V V and the catches w w, whereby the griper-fingers are held from contact with the cylinder while the paper is being fed, substantially as herein described;

3. The combination, with the adjustable journal-plates R R attached to the cylinder N substantially as described, and the griperrods P P having the fingers Q Q and corresponding retaining-springs T T, of the levers V V and studs 0 0, whereby the-printed sheetsare released from the griper-fingers during the revolution of the cylinder, substantially as hereinbefore set forth.

In testimony whereof I have signed my name to this specification in the presence of ,two subscribing witnesses.

JOHN R. RANKIN.

Witnesses:

E. O. FRINK, 'S. G. FRINK- 

